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Finding the Fourth Proportional to 111,398.49, 153,731.10 and 60,411.32

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Solution

The fourth proportional to 111,398.49, 153,731.10 and 60,411.32 is: 83,368.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,398.49 : 153,731.10 = 60,411.32 : x
  2. Step 2: Convert to fraction form
    111,398.49/153,731.10 = 60,411.32/x
  3. Step 3: Cross multiply
    111,398.49x = 153,731.10 × 60,411.32
  4. Step 4: Simplify right side
    111,398.49x = 9,287,098,676.05
  5. Step 5: Solve for x
    x = 9,287,098,676.05/111,398.49
  6. Step 6: Final answer
    x = 83,368.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.